#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <assert.h>

size_t my_strlen(const char* s)
{
	char* start = s;
	assert(s != NULL);
	while ( *s )
		s++;
	return s - start;
}

int main()
{
	char arr[] = "sjzxjhfuhhuic";
	printf("%zd", my_strlen(arr));
	return 0;
}
